body{
    min-width:450px
}
*{
    margin: 0;
    padding: 0;
}
h1{
    height: 50px;
    font:normal bolder 36px/50px 'Arial' ;
    margin: 20px auto;
    text-align: center;
}
input[type='text']{
    display: block;
}
li{
    list-style: none;
}
.clearfix::after{
    display: block;
    content: '.';
    clear: both;
    font-size: 0;
    height: 0;
    background-color: pink;
}
.box1{
    margin: 0 auto;
    width: 50%;
}
.boxIpt{
    display: flex;
}
.checkAll{
    float: left;
    width: 20px;
    line-height: 30px;
    height: 30px;
    margin-right: 10px;
}
.boxIpt .ipt{
    text-indent: 1em;
    height: 30px;
    flex: 1;
}
.sendBtn{
    min-width: 32px;
    width: 30px;
    margin-left: 10px;
    padding: 5px 0;
}
.list{    
    width: 100%;
}
.duties .li{
    background-color: beige;
    margin: 10px 0;
    display: grid;
    grid-template-columns: 50px auto 50px;
    font: 16px/30px 'Microsoft yahei';
}
.duties .li input[type="checkbox"]{            
    margin: 10px;
}
.checkStyle{
    background-color: bisque;
    filter: grayscale(100%)
}
.checkStyle label{ 
    text-decoration:line-through;
}
.control {
    display: grid;
    grid-template-columns: repeat(5,1fr);
    margin-top: 20px;
    text-align: center;
}
.control>*{
    box-sizing: border-box;
    width: 50%;
}
@media screen and ( max-width:1024px){
    .control{
        font-size: 12px;
        text-align: center;
    }
    .control>*{
        height: 30px;
    }
}
@media screen and ( max-width:768px){
    .control{
        font-size: 12px;
        text-align: center;
    }
    .control>*{
        height: 30px;
    }
}
@media screen and (max-width:450px){
    .control{
        font-size: 12px;
        text-align: center;
    }
    .control>*{
        height: 30px;
    }
}